Multiple SSH Keys settings for different github account
create different public key
create different ssh key according the article Mac Set-Up Git
$ ssh-keygen -t rsa -C "email@example.com"
The following is a quick guide to get this working on various Linux distros. As a side note, if you have Chrome installed alongside Vivaldi, Netflix should also work after making these changes. Alternatively, use my latest-widevine.sh to fetch and extract Chrome's copy of Widevine, so that it can be used by Vivaldi.
If you don't have working Flash video and need that in addition, please refer to these instructions.
Note: This guide is primarrily aimed at users of Vivaldi stable releases. If it does not solve your issues, read this in addition.
Chromium OS is cool. Chromium OS with crouton is cooler. Chromium OS with Docker is even cooler. This is specifically a guide for the Chromebook Pixel 2 (2015), but I can't think of any reason it wouldn't work with other devices.